/** * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file * distributed with this work for additional information regarding copyright ownership. Apereo * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use * this file except in compliance with the License. You may obtain a copy of the License at the * following location: * * <p>http://www.apache.org/licenses/LICENSE-2.0 * * <p>Unless required by applicable law or agreed to in writing, software distributed under the * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either * express or implied. See the License for the specific language governing permissions and * limitations under the License. */ package org.apereo.portal.portlets.permissionsadmin; import org.springframework.binding.message.MessageBuilder; import org.springframework.binding.message.MessageContext; import org.springframework.stereotype.Component; /** * This class validates {@link PermissionDefinitionForm} objects through the magic of Webflow: * http://docs.spring.io/spring-webflow/docs/current/reference/html/views.html#view-validation-programmatic-validator * */ @Component public class PermissionDefinitionFormValidator { public void validateEditPermission( PermissionDefinitionForm form, MessageContext messageContext) { // ensure at least one principal has been assigned if (form.getPermissions().isEmpty()) { messageContext.addMessage( new MessageBuilder() .error() .source("principal") .code("please.choose.at.least.one.principal") .build()); } } }